Yararacusu is misspelled and should be written as "Yararacusú". Yararacusú is another name with which venomous snakes of the genus Bothrops are known. Although it abounds in a large sector of the Amazon rainforest, its most frequent habitat is the Paranaense region. Its venom is highly toxic and if not taken care of quickly, an offdic accident of this nature is usually fatal. In Colombia, this kind of snakes are known as Cuatronarices, Size X, Mapaná or Mapanare. In Central America they are known as Nauyaca ( Nahuatl), Ik'bolay (Maya queqchi ) and Cuaima in Venezuela. Also in some parts of Brazil and Bolivia they are called Yaracusú.